This will be used in the next commits in order to
check common fields of opcode specific struct io_uring_sqe
union arms.
Signed-off-by: Stefan Metzmacher <metze@xxxxxxxxx>
---
io_uring/io_uring.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index f82173bde393..8e1a8800b252 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -3916,6 +3916,20 @@ static int __init io_uring_init(void)
#define BUILD_BUG_SQE_LEGACY_ALIAS(eoffset, etype, ename, lname) \
__BUILD_BUG_VERIFY_ALIAS(struct io_uring_sqe, eoffset, sizeof(etype), ename, legacy.lname)
+#define BUILD_BUG_SQE_HDR_COMMON(subtype, subname) do { \
+ BUILD_BUG_ON(sizeof(subtype) != 64); \
+ BUILD_BUG_SQE_ELEM(0, subtype, subname); \
+ BUILD_BUG_SQE_ELEM(0, struct io_uring_sqe_hdr, subname.hdr); \
+ BUILD_BUG_SQE_ALIAS(0, __u8, subname.hdr.opcode, hdr.opcode); \
+ BUILD_BUG_SQE_ALIAS(1, __u8, subname.hdr.flags, hdr.flags); \
+ BUILD_BUG_SQE_ALIAS(2, __u16, subname.hdr.ioprio, hdr.ioprio); \
+ BUILD_BUG_SQE_ALIAS(4, __s32, subname.hdr.fd, hdr.fd); \
+ BUILD_BUG_SQE_ELEM(32, struct io_uring_sqe_common, subname.common); \
+ BUILD_BUG_SQE_ALIAS(32, __u64, subname.common.user_data, common.user_data); \
+ BUILD_BUG_SQE_ALIAS(40, __u16, subname.common.buf_info, common.buf_info); \
+ BUILD_BUG_SQE_ALIAS(42, __u16, subname.common.personality, common.personality); \
+} while (0)
+
BUILD_BUG_ON(sizeof(struct io_uring_sqe_hdr) != 8);
BUILD_BUG_SQE_HDR_ELEM(0, __u8, opcode);
BUILD_BUG_SQE_HDR_ELEM(1, __u8, flags);
--
2.34.1
